Fixed #12633 -- Modified some old m2m attribute use in deprecated m2m table creation methods. Also added PendingDeprecation warnings to those methods. Thanks to Alex for the suggestion, and Ramiro for the report and fix.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12262 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/creation.py

@@ -145,6 +145,12 @@ class BaseDatabaseCreation(object):
 
     def sql_for_many_to_many(self, model, style):
         "Return the CREATE TABLE statments for all the many-to-many tables defined on a model"
+        import warnings
+        warnings.warn(
+            'Database creation API for m2m tables has been deprecated. M2M models are now automatically generated',
+            PendingDeprecationWarning
+        )
+
         output = []
         for f in model._meta.local_many_to_many:
             if model._meta.managed or f.rel.to._meta.managed:
@@ -153,11 +159,17 @@ class BaseDatabaseCreation(object):
 
     def sql_for_many_to_many_field(self, model, f, style):
         "Return the CREATE TABLE statements for a single m2m field"
+        import warnings
+        warnings.warn(
+            'Database creation API for m2m tables has been deprecated. M2M models are now automatically generated',
+            PendingDeprecationWarning
+        )
+
         from django.db import models
         from django.db.backends.util import truncate_name
 
         output = []
-        if f.creates_table:
+        if f.auto_created:
             opts = model._meta
             qn = self.connection.ops.quote_name
             tablespace = f.db_tablespace or opts.db_tablespace
@@ -210,6 +222,12 @@ class BaseDatabaseCreation(object):
 
     def sql_for_inline_many_to_many_references(self, model, field, style):
         "Create the references to other tables required by a many-to-many table"
+        import warnings
+        warnings.warn(
+            'Database creation API for m2m tables has been deprecated. M2M models are now automatically generated',
+            PendingDeprecationWarning
+        )
+
         from django.db import models
         opts = model._meta
         qn = self.connection.ops.quote_name
@@ -306,9 +324,15 @@ class BaseDatabaseCreation(object):
 
     def sql_destroy_many_to_many(self, model, f, style):
         "Returns the DROP TABLE statements for a single m2m field"
+        import warnings
+        warnings.warn(
+            'Database creation API for m2m tables has been deprecated. M2M models are now automatically generated',
+            PendingDeprecationWarning
+        )
+
         qn = self.connection.ops.quote_name
         output = []
-        if f.creates_table:
+        if f.auto_created:
             output.append("%s %s;" % (style.SQL_KEYWORD('DROP TABLE'),
                 style.SQL_TABLE(qn(f.m2m_db_table()))))
             ds = self.connection.ops.drop_sequence_sql("%s_%s" % (model._meta.db_table, f.column))